package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * @author Hasee
 * @version 1.0
 * @description: TODO
 * @date 2023/2/20 11:54
 */
@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private WebSocketServer webSocketServer;
    @Override
    @Transactional
    public OrderSubmitVO orderSubmit(OrdersSubmitDTO ordersSubmitDTO) {
        //判断地址薄是否为空
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null){
            throw  new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //判断当前用户的购物车是否为空
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list == null || list.size() == 0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        Orders order = Orders.builder()
                .phone(addressBook.getPhone())
                .address(addressBook.getDetail())
                .consignee(addressBook.getConsignee())
                .number(String.valueOf(System.currentTimeMillis()))
                .userId(userId)
                .status(Orders.PENDING_PAYMENT)
                .payStatus(Orders.UN_PAID)
                .orderTime(LocalDateTime.now()).build();

        BeanUtils.copyProperties(ordersSubmitDTO,order);
        orderMapper.insert(order);

        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : list) {
            OrderDetail orderDetail = OrderDetail.builder().orderId(order.getId()).build();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetailList.add(orderDetail);
        }

        orderDetailMapper.insertBatch(orderDetailList);

        shoppingCartMapper.delete(userId);

        return OrderSubmitVO.builder()
                .id(order.getId())
                .orderNumber(order.getNumber())
                .orderAmount(order.getAmount())
                .orderTime(order.getOrderTime())
                .build();
    }


    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {

        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);


        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(),
                new BigDecimal(0.01),
                "苍穹外卖订单",
                user.getOpenid()
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }


    public void paySuccess(String outTradeNo) {

        Long userId = BaseContext.getCurrentId();


        Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo, userId);


        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
        Map map = new HashMap<>();
        map.put("type",1);
        map.put("orderId",orders.getId());
        map.put("content","订单号："+outTradeNo);

        webSocketServer.sendToAllClient(JSON.toJSONString(map));

    }


    @Override
    public PageResult historyOrders(int pageSize,int page,  Integer status) {

        PageHelper.startPage(page,pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setPageSize(pageSize);
        ordersPageQueryDTO.setStatus(status);
        ordersPageQueryDTO.setPage(page);
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());

        List<OrderVO> orderVOList = new ArrayList<>();

        Page<Orders> orders = orderMapper.pageQuery(ordersPageQueryDTO);

        if (orders != null && orders.getTotal() > 0){
            for (Orders order : orders) {
                Long id = order.getId();
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(order,orderVO);
                orderVO.setOrderDetailList(orderDetails);

                orderVOList.add(orderVO);

            }
        }


        assert orders != null;
        return new PageResult(orders.getTotal(),orderVOList);
    }

    @Override
    public OrderVO orderDetailQueryById(Long id) {
        Orders order = orderMapper.selectById(id);
        Long orderId = order.getId();
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(order,orderVO);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    @Override
    public void orderCancel(Long id) throws Exception {
        Orders ordersDB = orderMapper.selectById(id);


        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {

            weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));

            orders.setPayStatus(Orders.REFUND);
        }

        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);

    }

    /**
     * 再来一单
     * @param id
     */
    @Override
    public void orderRepetition(Long id) {


            Long userId = BaseContext.getCurrentId();


            List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);


            List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
                ShoppingCart shoppingCart = new ShoppingCart();


                BeanUtils.copyProperties(x, shoppingCart, "id");
                shoppingCart.setUserId(userId);
                shoppingCart.setCreateTime(LocalDateTime.now());

                return shoppingCart;
            }).collect(Collectors.toList());


            shoppingCartMapper.insertBatch(shoppingCartList);

    }

    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {

        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> orderVOList = getOrderVOList(page);
        return new PageResult(page.getTotal(),orderVOList);
    }


    public OrderStatisticsVO statistics() {

        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }



    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();

        orderMapper.update(orders);
    }

    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {

        Orders ordersDB = orderMapper.selectById(ordersRejectionDTO.getId());


        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }


        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == Orders.PAID) {

            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
        }


        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {

        Orders ordersDB = orderMapper.selectById(ordersCancelDTO.getId());


        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == 1) {

            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));

        }


        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    public void delivery(Long id) {

        Orders ordersDB = orderMapper.selectById(id);


        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.update(orders);
    }

    public void complete(Long id) {

        Orders ordersDB = orderMapper.selectById(id);


        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    @Override
    public void reminder(Long id) {
        Orders orders = orderMapper.getById(id);
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        Map map = new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号：" + orders.getNumber());
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }


    private List<OrderVO> getOrderVOList(Page<Orders> page){
        List<OrderVO> orderVOList = new ArrayList<>();
        List<Orders> ordersList = page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)){
            for (Orders orders : ordersList) {
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                String orderDishes = getOrderDishesStr(orders);
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }
    private String getOrderDishesStr(Orders orders){
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
        List<String> orderDishList = orderDetailList.stream().map(x->{
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        return String.join("",orderDishList);
    }


}
